Apparatus for casting printers  rollers



(No Model.)

M. P. BINGHAM. APPARATUS POR- GASTING PRINTERS ROLLERS. No. 415,855.

Patented Nov. 26, 1889.'

A E a Z N. PETERS. Plmlo'Lilhngmpmn. wnhmglm, n l;

UNITED STATES PATENT OFFICE.

MILLARI) F. I'NGIIABI, OF CHICAGO, ILLINOIS.

APPARATUS FOR CASTING PRINTERS. ROLLERS.

SPECIFICATION forming part of Letters Patent No. 415,855, dated November 26, 1889.

Application iiled May 25, 1889. Serial No. 312,058. (No model.)

To @ZZ whom it may concern:

Be it known that I, MILLARD F. BINGHAM, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Apparatus for Casting Printers Rollers, of which the following is a specification.

In the kind of apparatus for casting composition for printers use shown in the patent to L. K. Bingham,No. 342,420, of May 20,1886, and in which the molds are filled from the bottom, openings are provided in the lower plate of the mold-cylinder through which the ends of the stocks of the rollers may project, thereby avoiding the casting of the composition around the parts of the stocks which are usually left uncovered. The openings in the cylinder plate or bottom must, of course, be as large as the largest diameter of the stock which passes through them, and in said patent are shown several devices called spiders or stars for centering the stocks in such openings, so that the body of the stoel: will be placed in its proper position relative'to the walls of the mold.

My present invention relates to a form of bushing adapted to be secured to the stocks before they are inserted in the mold, and which will require no care or attention during the act of so inserting the stock 5 and it is especially intended for use with that class of stocks which are provided with collars at the ends of the journals.

The invention consists in the combination, with the stock, of a bushing composed of an inner split ring or bushing and an outer integral ring for holding the halves of the split ring in position, the split ring fitting the stock and the integral ring fitting the opening in the cylinder-plate.

The invention further consists in the novel construction and combination of the several parts hereinafter fully explained, and set forth in the claims.

The nature of this improvement is more fully evident from the drawings which aecompany this application, and in whieh- Figure l is a central vertical section of a casting-cylinder, showing several of the stocks in position therein. Figs. 2 and 3 are detached views of the split and integral rings, respectn ively. Fig. L shows the two rings assembled B is the dished plate or supplemental bottom, having the openings for the stocks and removably secured to the cylinder A in the usual manner. These openings are uniform in size and suiiiciently large to receive the largest spindles.

C C are the molds incorporated in the cylinder A, and D I) are the stocks positioned in such molds. These stocks are of the ordinary eonstruetion, and are provided with collars d at the inner ends of their journals, as clearly indicated. To the spindles d of these stocks and inside the collar d, I apply my invention, as illustrated-that is to say, I place upon the said spindle portionthe two halves E E of a split bushing and secure them in place by the integral ring F, the split ring having an interior diameter agreeing with that of the spindle, and the ring F having an interior diameter agreeing With the outside diameter of the split bushing. When thus placed upon the spindle of the stock, the bushing is ready for use and will retain its position until the stock is placed in the mold. As the exterior of the integral ring agrees with the openings in the supplemental bottom of the casting-cylinder, it is an easy matter to insert the stock in its correct position in the mold, as the bushing centers the .stock in the opening in the bottom plate, and such opening registers truly with the mold. I pre fer to make both the split ring and the integral ring slightly tapering, as that facilitates the centering operation when setting "the stocks. It also facilitates the removal of the bushing after the casting operation. The split halves Ef may have an outside shoulder e, which will limit their entrance into the ring F. At the upper ends a similar split bushing is employed with a retaining or confining ring G, like the ring F, except that it is provided with radial arms g, which extend out to and bear against the sides of the moldcylinders C. y Y

One great advantage attending my improve ment is that the stocks may be supplied with these bushings before they are placed in the lOO cylinders, thereby obviating the necessity7 of applying the bushings at the time of inserting them. The bushings do not easily7 b`ecome detached and are ready for inst ant use. By keeping an assortment of the split rings all sizes of the stocks canv be fitted with the device.

I Claiml. The combination, with the stock of a prin ters roller and the casting-cylinder, of the divided ring E E and integral holding-ring, substantially as and for the purpose set forth.

2. The Combination, with the stock of a printers roller and the oasti ng-cylinder, of the divided ring E E and the holding-ring, both rings being made tapering, substantially as set forth.

3. The combination, with the stock of a printers roller and the Casting-cylinder, of the halved ring E E and the integral retainingring, both rings being made tapering and the divided ring having a collar e, substantially as set forth.

4. The combination, with a roller-Casting apparatus having a removable lower plate B below the molds Which is provided With openings for the stock-spindles, of a roller-stock having removably attached to its spindle a short bushing having no Contact with the mold and acting to center the stock in the openings in the lower plate, substantially as set forth.

` MILLARD F. BINGHAM. Vitnesses:

EDW. S. EVARTS, H. M. MUNDAY. 

